VG Brand Black Armband with Sweat Resistant lining for HTC Thunderbolt Android Phone Double stitched perfect-fit neoprene exercise armband!!! Neoprene armband is built to withstand sweat and tension!!! Armband allows listening to your smart Phone, while exercising!!! Armband is built to withstand any amount of physical activity!!! Perfect for any exercise: running, weight lifting, even jump roping and bike ridding...ect!!!